XINYI Sini Audio XY-S350H, Quick Start Manual

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XY-S350H 220W*2+350W HIFI 2.1 Bluetooth 5.1 Amplifier Module
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5>.Family entertainment and leisure
6>.Games and Cinema
6.Note:
1>.The power amplifier board should be as far away as possible from the WIFI signal (router) avoid
signal interference.
2>.It is power supply voltage DC 12V-38V with more than 10A current. Module will be damaged if input
voltage is more than 38V.
3>.It is recommended to use a working power supply of more than 15V.
4>.Please don’t use too long wires to avoid signal interference.
5>.There can be enough power output only when the audio input is sufficient and the power supply
voltage/current input is sufficient.
6>.The higher the power supply voltage, the greater the output power.
7>.The smaller the impedance of the speaker, the greater the output power. It is recommended to use
4ohm speaker.
8>.Please read use manual and description before use.
7.Frequently Asked Questions:
1>.How to choose a power supply adapter?
Q: The power supply of the module is very critical. The user must pay enough attention to the power
supply. Otherwise it may not work properly.
The power supply is critical. The ripple of the selected power supply must be small. A power supply
with a large ripple will cause the background noise of the power amplifier board to become larger and
there will be current sound.
It needs 5.5*2.1mm or 5.5*2.5mm power adapter and it is recommended to use 24V power supply
with current more than 10A.
The higher the voltage and the higher the current then the better the output power. It is better to
connect 4ohm speaker if the power voltage less then 24V. It is recommended to use 36V voltage if use
8ohm speaker.
It will be damaged if input voltage is more than 38V.
If the voltage is too low, the sound will be distorted after the sound is amplified.
If the current is too small, the speaker cannot be driven to work or the speaker will pull the voltage
low and resulting in abnormal operation or poor sound quality.
Adjust the volume to the maximum may be distorted and affecting the sound quality if input low
power adapter such as 36V 10A adapter.
2>.How to choose a speaker?
Q:Commonly used speakers are generally 4ohm~8ohm.The speaker no need distinguish between
positive and negative polarity.
The left and right channel speakers need to be connected to full-range speakers or high-frequency
speakers and the power is between 20W~300W. The rated power is 220W*2.
The subwoofer speaker cannot be connected to ordinary speakers. It needs speaker which with
subwoofer speakers need to be connected.Its power is between 40W~400W and subwoofer speaker’s
cut-off frequency is more than 20Hz~200Hz.The rated power is 350W.
It can also work properly if the speaker has low power such as 10W~50W. But it needs connect to
low power adapter such as less than 15V to prevent damage to the speaker.
User don't have to worry about the problem of the speaker burning out if connect to 200W~500W
speaker.Module can connect 12V~38V.The higher the voltage selected, the greater the sound or
power that can be output.
Speaker power cannot exceed 500W, otherwise it will affect the sound quality.
3>.How to choose Bluetooth or AUX audio input mode?
Q: AUX/USB mode has priority over Bluetooth mode.User need disconnect AUX or USB if use
Bluetooth as input audio signal or selected by APP. The priority of connecting first is high for AUX and
USB.
4>.Why is the volume working normally when volume small and there is turbidity after increase
volume?
Q: Sound distortion.Please change the adapter power supply with higher voltage and current. Or
decrease the volume.
5>.Why is the volume working normally when volume small and there is pause after increase
volume?
Q: The input power is insufficient.Please change the adapter power supply with higher voltage and
current.
Power supply itself intermittent power-off protection.Please change a match power adapter.
The power of the power supply is too large so please reduce the power of the input power.
The power amplifier board is seriously heated resulting in trigger overheat protection.So please